speedtest-cloudflare

#!/bin/bash
# Speedtest using speed.cloudflare.com servers
# Copyright 2020 Mikko Rantalainen <mikko.rantalainen@iki.fi>
# License: 2-clause BSD (https://opensource.org/licenses/BSD-2-Clause)
set -e

ID="$RANDOM$RANDOM$RANDOM"
BYTES="${BYTES:=1000000}"
SERVER="https://speed.cloudflare.com"
TEMPFILE="$(tempfile -p speed -s test)"

FORMAT="------------ Statistics: ------------
TCP/IP handshake:   %{time_connect} seconds
TLS handshake:      %{time_appconnect} seconds
Time until request: %{time_pretransfer} seconds
Request size:       %{size_request} bytes
Upload size:        %{size_upload} bytes
Upload bandwidth:   %{speed_upload} bytes/second
Download size:      %{size_download} bytes
Download bandwidth: %{speed_download} bytes/second
HTTP status:        %{http_code}
Total time:         %{time_total} seconds
"

trap "rm -f -- '$TEMPFILE'" EXIT
echo

echo "Downloading zero bytes from $SERVER ..."
curl --progress-bar -o "$TEMPFILE" "$SERVER/__down?measId=$ID&bytes=0" -w "$FORMAT"
echo
# Store "__cfduid" cookie value
COOKIEVALUE="$(cat "$TEMPFILE")"

echo "Downloading $BYTES bytes from $SERVER ..."
curl --progress-bar -o "$TEMPFILE" "$SERVER/__down?measId=$ID&bytes=$BYTES" -w "$FORMAT"
echo

echo "Uploading $BYTES bytes to $SERVER ..."
curl --progress-bar -F upload=@"$TEMPFILE" -o /dev/null "$SERVER/__up?measId=$ID" -w "$FORMAT"
echo

For example, to test 100 kB file transfers, run

BYTES=100000 ./speedtest-cloudflare

if your shell. The script tests 1 MB file transfers by default. The maximum supported by Cloudflare servers seems to be 500 MB.